In this comprehensive, in-depth book, twelve state-of-the-art radiometric calibration subject areas are covered: defining system requirements, calibration standards, solar and Earth radiation source, sensors system, NASA/EOS/GOES, NASDA/ADEOS, ESA/ENVISAT, and International Space Station program, basic radiometric functions, laboratory and in-flight calibration system engineering, typical radiometric accuracy, and integrated calibration system engineering requirements. In each area, new concepts, advanced technologies and future calibration systems and system engineering concerns are treated. In covering these many important radiometric calibration systems, emphasis is given to the technical challenges presented by this fast-growing field of remote sensing systems.